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Norwalk WPCA reports small sanitary sewer overflow, project updates and a 2 million gpd drop in average flow over 20 years
Summary
Operations staff reported one small sanitary sewer overflow on Lexington Avenue that was contained and reported appropriately, progress on multiple pump station and sewer rehabilitation projects, and a staff analysis showing average daily wastewater flow declined by roughly 2,000,000 gallons over 20 years; members also noted an anecdotal sturgeon sighting in the river.
WPCA operations staff on Nov. 17 summarized monthly field work, project progress and a small sanitary sewer overflow (SSO) and presented a staff analysis showing a long-term decline in average wastewater flow. The board received multiple project updates, including progress at Port Point pump station and the temporary Killer Brook pump station, lining work in island areas, and scheduled surveys and borings for Ballen Street design.
Operations staff reported system activity for the month: about 3.5 miles of CCTV inspection, roughly 3.01 miles of sewer cleaning, 113 manhole inspections, 3.1 miles of SLRAT inspection, 10 service calls and 28 IPP site inspections. Plant operations staff said both north and south chlorine contact tanks were cleaned and that nitrogen performance was about 490 pounds…
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